Selah hilee



UNITED STATES PATENT OF ICE.

SELAH HILER, OF NEW YORK, N. Y.

METHOD OF MAKING COPPER-COVERED IRON OR STEEL WIRE.

SPECIFICATION forming part of Letters Patent No. 248,860, dated November1, 1881.

Application filed December 31,1879.

to form a wire.

My present invention is an improvement up on the aforesaid mode ofmaking wire, whereby the copper-covered steel wire is made with greaterfacility.

I provide a tube of copper, which should be free from impurities, and abar or ingot ofsteel of the proper relative weight to correspond withthe wire when manufactured. The steel bar is to be of a size to passfreely into the copper tube. The surface of the steel bar is to be freefrom scale, and such bar is to be highly heated, so that it will rolland draw in the usual manner. The copper tube is also to be free fromscale, especially upon the inside. After the steel bar has been heatedthe copper tube, in a cold or moderately-heated condition, is slippedover the steel bar, and the two are passed through rollers and reduceddown to the proper size in the manner now usual in making wire rods.Gare, however, is to be taken to prevent the rollers producing any tinor projection upon the copper. The wire may be drawn through one or moredraw-plates, if 5 desired. The heated condition of the steel bar,whenintroduced into the copper tube, causes such copper to adhere andprevents the metal separating in the subsequent operations. Ironmay takethe place of steel, it'desired.

I claim as my invention--- The herein-described improvement in themanufacture of coppercovered steel or iron wire, consisting inintroducing a heated steel or iron bar into a copper tube and rollingand drawing the two metals into wire of the desired size, substantiallyas set forth.

Signed by me this 29th day of December, A. D. 1879.

SELAH HILER. Witnesses:

HAROLD SERRELL, GEO. '1. PINGKNEY.

